text: Dr Nguyen Tri Dung, director of the HCMC Center for Disease Control (HCDC), said that analysis of clinical factors and test results suggested that the person may be newly infected, with a currently unknown source of transmission?
classes:  No, the process of analyzing clinical factors and test results should be carried out carefully and seriously.  Also, the process of analyzing clinical factors and test results should be carried out carefully and seriously.  Yes, the process of analyzing clinical factors and test results should be carried out carefully and seriously.